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Title: Catchment hydrology and ground water modeling of the Osmansagar and Himayathsagar reservoirs
Researcher: Varalakshmi, V
Guide(s): Venkateswara Rao, B
Keywords: ground water modeling
Drainage Pattern
Ground Water Recharge
Normalized Difference Vegetation Index (NDVI)
Upload Date: 3-Sep-2012
University: Jawaharlal Nehru Technological University
Completed Date: January 2012
Abstract: Hard rock region is tremendously witnessing a growing demand for ground water resources, since adequate surface water resources are not available. The decreased ground water level has considerable effect in decreasing the surface runoff. Hence, it is necessary to know the quantitative response of the aquifer system vis-à-vis surface runoff for proper water management in the catchments. Therefore an attempt is made in this thesis to understand the catchment hydrology of both Osmansagar and Himayathsagar catchments, which are supplying drinking water to Hyderabad city - a capital city for the state of Andhra Pradesh, India, with an intention of developing a ground water flow model for the catchments.For this purpose Inflows to the Osmansagar and Himayathsagar reservoirs are calculated using daily water levels at the reservoir sites. From this record it has been observed that inflows to Osmansagar and Himayathsagar reservoirs are decreasing continuously for the past 49 years inspite of normal rainfall over the period. This may be due to the fact that over the years, there is an increased usage of surface and ground water in the catchment areas resulting in the reduction of inflows. Because of the above fact whatever the rainfall that occurs in the upper catchment, is simply percolating down to recharge the depleted ground water table, to meet the soil moisture deficiency and to meet the storage of water in smaller or bigger water conservation structures leaving little or no runoff that could reach the downstream. The above fact is proved by NDVI analysis indicating that the total cropping area has been increased by 25.84% in kharif and 55.55% during rabi from the year 1989 to 2008. This has lead to the excessive usage of ground water in the catchment. A ground water flow model is also developed under steady and transient conditions using visual MODFLOW software for the period 2005 to 2009.
Pagination: 320p.
Appears in Departments:Faculty of Water Resources

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01_title.pdfAttached File17.83 kBAdobe PDFView/Open
02_declaration.pdf51.81 kBAdobe PDFView/Open
03_certificates.pdf53.3 kBAdobe PDFView/Open
04_abstract.pdf74 kBAdobe PDFView/Open
05_contents.pdf174.51 kBAdobe PDFView/Open
06_list of figures and tables.pdf165.99 kBAdobe PDFView/Open
07_list of publications.pdf101.68 kBAdobe PDFView/Open
08_list of abbreviations.pdf78.08 kBAdobe PDFView/Open
09_chapter 1.pdf810.79 kBAdobe PDFView/Open
10_chapter 2.pdf148.58 kBAdobe PDFView/Open
11_chapter 3.pdf376.41 kBAdobe PDFView/Open
12_chapter 4.pdf923.73 kBAdobe PDFView/Open
13_chapter 5.pdf3.57 MBAdobe PDFView/Open
14_chapter 6.pdf1.19 MBAdobe PDFView/Open
15_chapter 7.pdf1.35 MBAdobe PDFView/Open
16_chapter 8.pdf2.17 MBAdobe PDFView/Open
17_chapter 9.pdf156.62 kBAdobe PDFView/Open
18_references.pdf273.39 kBAdobe PDFView/Open
19_appendix.pdf3.03 MBAdobe PDFView/Open
20_annexture.pdf8.4 MBAdobe PDFView/Open
21_acknowledgements.pdf68.69 kBAdobe PDFView/Open

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